CVE-2026-89134

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Source

https://cve.org/CVERecord?id=CVE-2026-89134

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89134.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-89134

Downstream

Published

2026-09-27T09:16:58Z

Modified

2026-09-30T03:30:51Z

Severity

6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator

Summary

Subject CN name-constraint check bypassed when non-DNS SAN present

Details

A certificate with no dNSName SAN but another SAN type present (e.g. registeredID or iPAddress) bypassed the Subject CN dNSName name-constraint check. The CN-as-DNS fallback was gated on cert->subjectCN != NULL && cert->altNames == NULL && !cert->isCA instead of "no dNSName SAN", so an out-of-scope CN was accepted. This incomplete fix from CVE-2026-6731, leading to the name-constraint check issue, was introduced in wolfSSL version 5.9.2.

Database specific

{
    "cna_assigner":  "wolfSSL",
    "cwe_ids":  [
        "CWE-295"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89134.json"
}

References

Affected packages

Git / github.com/wolfssl/wolfssl

Affected ranges

Type

GIT

Repo

https://github.com/wolfssl/wolfssl

Events

Introduced

ac01707f552c611fbd135cc723b2682b3e7f80f2

Last Affected

ac01707f552c611fbd135cc723b2682b3e7f80f2

Database specific

Show details

{
    "extracted_events":  [
        {
            "introduced":  "5.9.2"
        },
        {
            "last_affected":  "5.9.2"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

5.*

5.9.2

v5.*

v5.9.2-stable

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89134.json"